Yarn clamp



Aug. 28, 1923.

E. T. SAMPSON YARN CLAMP Filed April 11. 1922 Anya ' portion of a warp beam equipped with my Patented Aug. 28, IQZB.

E ERETT tr.- SAMPSON, or FRANKLIN, MASSACHUSETTS.

YARN CLAMP.

Application filed April 11, 1922. Serial No. 551,536.

ment in Yarn Clamps, ofwliich the follow'-- ing description, in connectionwithitl1e-ac companying drawing, is a speciiication, like characters on the drawing representing like parts.

This invention relates to a clamping device applicablefor clamping or fastening warp yarn ends either to a warp beam of a loom orto the leader onto whichthe cloth is wound as it is woven in the loom.

The common method now in vogue forat- 'taching the warp yarns either to a w arp beam or to the leader is to secure to the warp beam or leader a web of cloth which extends the length thereof and to provide-the edge of said web with eyelets or. grommets into which yarn ends are tied. This method of fastening the warp yarns has the disadvantage that 'the operation of tyingthe. Warp yarns into the eyelets or grommets is more or less laboriousand it has the further disadvantage that frequentlyone. or more of the knots will slipthus slackeningup part of the warp threadsv w The object of my present invention is to provide an. improved clamping device by -which the warp yarn endsmay be securely fastened eitherto -the'warp beam or to-the leader and which also has the advantage'that the ope-ration of connecting the yarn ends totheclamping device requires less time than that of tying the ends into the eyelets or grommets. q

In order to give an understanding of my invention I have illustrated in the drawings some selected embodiments thereof which will now 'bedescribed, after which the. novel features will be pointed out in the appended claims. f V. 1

In the drawings: 2 A

1 is a fragmentary view showing a approved yarn clamping, device; 7 Fig, 2 is an enlarged View of one clamping, devices; r

- Fig. 3 is an edgeview showing the inanner in which the yarn is clamped therein; Fig, 4 is a perspectiveview illustrating the operation of-thedevice; q

glfiig. 5 shows a modification. v a In the drawings Ihave indicatedat 1 a of; the

portion 8 which is formed at one warp beam of any suitable or usual construction such as is used in weaving operations. This, warp beam hasattached thereto a web or strip 3 of canvas or similar material as usualvin warp beams. I

rA'rsNr OFFICE.

4 indicates a web of warp threads, the ends of which'are to be attached to the 'warp beam. 1 r

' Inthe present invention this attachment is made by means of a plurality-offlclamping devices 1 embodyingmy invention. These clamping devices are indicated generally at 5 and each is formed with a hook-shaped portion 6 and with a yarn: clampingmember 7 which co-operates with the hookshaped portion to grip the yarn ends. While the particular'shape of theclamp'ing member maybe varied" without departing from the invention, I have herein chosen. to illustrate a clamping member having a body the hook-shaped portion 6 and at the other end is provided with means forattachingit to the edge of the web 3. The means'herein shown is a loop or strap 9 which is secured end with to the edge of the web 3 and isrlooped through the slot 10 formed in-the portion 11 extending laterally from the body 8.

The hook-shaped portion 6 is, preferably provided with a'con'cave finner yarn engaging' face 12 and the clampinginemberi 7 is pivotally connectedto'the body portion- 8 and is ofa length to overlie the beak or point 13 of the hook-shaped member. This clamping member is herein' shown as U portion of the clamp is a shaped. The body received between the. ends'ltfof the arms of the U-shaped clamping member and said ends are pivotally connected to the' body portion by the, pivot 15.

. The clamping member is of sufficient length to extend over th'ebeak or point 13 of the hook and-when the parts are in operative'position said beak enters between the two sides. of the yarn clamping drawings. I I

The yarn clamping member is also preferably formed on its inner face with cave yarn receiving edge 16.

In connecting the y'arnto theclampi-ng a cong member. as clearly seen' in the devices the web of warp will be divided into separate bunches orgroups 17, one for each clamping device, and in connecting any bunch of yarn to the clamping device said yarn will beabove the clamping device and will then be introduced into the space'be hind the clamping member 7 and hetween the latterv and the portion 8, and then the clamping member will be swung into the dotted line, position Fig, 2 and the end of thehnnch Will be passed at-(send the clamping member and between the latter and the point 1391'. the hook. The operator then draws on the ends of each bunch to tighten the warp threads and this results in drawing the bunch of Warp threads around the clamping firemher .As the warp yarns are clr aiv'nta'iit the 'teris'ion'thereof will cause the clamping member 7 toswing toward the clampin edge 12 thereby {gripping the bt'irich firmly between the straight face 18 of the Clamping nie'mber'and the-curved face 12015 the hook; shaped portions fi. Owing to the factthat th e'c'lai'npii'ig member 7 is pivetenybeiihtted to the b'odi; 8 'allfthe strain on the yarn tendto draw the clam ing member 7 toward the humping edge 12am tiiereto et'he grip which the clamping member has an; the yam w'v'i'llbep'roortional 'to the strain "on the yarn; 'VVhen the member? is in clamping position the beak of the teak-shaped member 'is' located between the two-"sides of the clampi-ng member and said beak therea fte'r serves to hold the clamping member in properp'o'siti'o' Y II will preferably provide a sliding pivotal connection. between "the clamping member and the body 8' 1 y fei ning th latter with? ;s1ot1"9: into which the-pivot pin 15 operates. The advantage of this go'nstrueti n is that "the clampingriiemher may move bodily to Ward and fro'n the clamping edge 12 -ther'ehv to accomm. date different sized "bunches of yarn The body portion '8.Wil l preferaloly' he made: slightly cd'rved 'as 's'how'n in Fig. 3, so thatitwill fit the cnrvatu'reht thew'ar'p hea'in .1 which is indicated in dotted linesof Fig. With this constriictioh the clampir ig, device tvill lie flatly on the curved surfacefiof the Warpi'he'am and tvil'l take up no moreroom than that pcc'iip'ied hy the knots Where the Warp threads are 'tieclintb the v'veb8. v,

LE desired '1 may make the loody 8. in two sections 20 and '21 which are hinged together 'ast'shofwn atQQ in ord'er to provide a fie'xible "clampingfimehib'er ivh'ich Will-"readily fit Wilil) :beams of 'difi'erent'diameters; ,1 -yi improved clampingd'evi'c'e is easy to manipulate'andit is certain in its actionjo'ecause when? the Warp ends are once clamped therein; there is 'no possibility that they will slip. As aresu'lt an even tensionof "all 'thetwarps'is ensured. I

"While :I have illustrated some selected embodiments or my 'i'nventi'on lfio not Wish 'totbe limited to'the eonstruetionalfeatures showni vi u .While I have referred to the 'heainl 'ajs a Warp heamyet I Wish 'i't'niiderstoodt'li'at the 4 memberconnected to the -flat ma member hav ng amen tyx invention is not limited i n its application to a Warp beam but is capable of use for connecting the yarn ends to the leader or' any other similarsroll and therefore, the

i 'y 0f warp-Wr t ql i ifi ii Q t car pitt the edge of said tteb;'eacli clainping, device-comprising a flatbod-' niehih hav' ing'ahoolcfshafied parties as whit to; 156th bodily and s'tvingingmov Ward and from thehook; the 'ii ern rciampin q ifimtr being mutated to overlie the point of the hoolgwherebyfith'n yarii."e'nds are carried ai'o iiid theclamping niefiitr and then Ihetiveeh the latter and the. iniier edge of the hook 'th e't ensiori to which the yarh is s'iihj'ecte'id tvillcauseth'eclamping member to'cla'mp the fi'arn against the ifliier tags ofthe hobk. o A

A- yam tim i g device for chansons-g warp-ya n endsto a heafmahd 'ebfigpnsih ga net they member having a ndek sh'a'ped so 'tion means confiectedito th ehppos'ite end terror attaching it to the team, a yarn-' 'cl'a1hping ine her estimated to 'h'cidy so; that it cah"m.ove Bodily 'svvi'rigtd afr'dt 'and from the h ok f, the end "dismay menmping ment t a; tea t6 overlie the point of the hook whereb when yarn ends are'fcarried trauma 'th' ni'mbe'rthen betiventhe v, {I inner edge ofthe hookthe tea- 1 njt'o "which the yarr'ij's' sntj ecfd villcau'se t hfcla'l ffping member to the *yaniagains't the iiiili' dd-gear the hook. s x r i 1 I a The combination with i were team; or a pinrality ef-yttr -cl'amjtmg device}, secure thereto, eachjclafr'nping device co' rising ing portion at 61i?) eiid rained on "its in her 7 edge Witha yani -receivihgrec ess, a e

ing'nwniber 15'i'i; j ta11 rc6nneetet1 166 "the hody I I aclj'ace it one s'ide o f the reces's the iidt'if the elainpi g emberafitegl too; of't'he lateraipo'r'tioji tthehpposlte the recess, said damping mei'nher liajvm yarn clamping edge facing the re e'sfs' and 7 having snfiicient swingingiflfiviherft sdthat yam-clamping frieifi'her and their ht Ween said yarn-cilafi'ipingdge and the Wall or the recess the tension twhith the yarns el jected will cause the V yarn-fcl'ar'riping-jneifihei to clamp the yarn against the trail 6f the recess. g .4; l i'yarn clampli'ngfdvic'e for'fcohnectin Warp yarn to a beam ;c o1'nrising "a estate articulated nei'n'her, "means (fohfiected vvith a warp beam, the other arm of said member havmg a yarn-receiving recess, and a yarnclamping member pivoted to the Q-shaped member and having a yarn-clamping edge;

.subjected will cause the yarn-clamping member to clamp the yarn between the yarn clamping edge and the Wall of the recess.

In testimony whereof, I have signedmy name. to this specification.

EVERETT T. SAMPSON. 

